155544383 has 2 divisors, whose sum is σ = 155544384. Its totient is φ = 155544382.

The previous prime is 155544379. The next prime is 155544401. The reversal of 155544383 is 383445551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155544383 - 2² = 155544379 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155544353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77772191 + 77772192.

It is an arithmetic number, because the mean of its divisors is an integer number (77772192).

Almost surely, 2^155544383 is an apocalyptic number.

155544383 is a deficient number, since it is larger than the sum of its proper divisors (1).

155544383 is an equidigital number, since it uses as much as digits as its factorization.

155544383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 38.

The square root of 155544383 is about 12471.7433825428. The cubic root of 155544383 is about 537.7966725657.

The spelling of 155544383 in words is "one hundred fifty-five million, five hundred forty-four thousand, three hundred eighty-three".